About: http://webisa.webdatacommons.org/38392951

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org